Which mechanism increases peripheral vascular resistance and contributes to the development of hypertension?

A. Oxygen does play a role in maintaining acid-base balance indirectly, as it is required for aerobic metabolism, which produces carbon dioxide that is regulated by the body to maintain acid-base balance. However, this is not its primary role.

B. Oxygen does trigger chemoreceptors, but this is more of a secondary function to regulate breathing based on oxygen and carbon dioxide levels.

C. While oxygen has many roles, its most critical function is providing the necessary support for cellular metabolism, which is vital for energy production in cells.

D. Oxygen is essential for cellular metabolism as it is required for the process of oxidative phosphorylation in mitochondria, which produces ATP, the energy currency of cells.

A. A room within view of the nurses' station does not provide the necessary isolation for a client with active tuberculosis. Tuberculosis is a contagious airborne disease, and isolation in a room with appropriate ventilation is essential.

B. A room with another nonsurgical client is not appropriate for a patient with active tuberculosis, as it could lead to the spread of the infection to another patient. Isolation in a room designed to prevent airborne transmission is necessary.

C. A room with air exhaust directly to the outdoor environment is the most appropriate choice. Tuberculosis is transmitted through airborne particles, so the client should be placed in a negative pressure room with exhaust ventilation that directs the air outside to prevent the spread of the infection.

D. A room in the ICU is not necessary unless the client requires intensive care. The primary concern is ensuring appropriate isolation, which can be achieved in a standard room with the proper ventilation, rather than an ICU setting.